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Finding the Fourth Proportional to 103,532.40, 155,335.04 and 50,978.80

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Solution

The fourth proportional to 103,532.40, 155,335.04 and 50,978.80 is: 76,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,532.40 : 155,335.04 = 50,978.80 : x
  2. Step 2: Convert to fraction form
    103,532.40/155,335.04 = 50,978.80/x
  3. Step 3: Cross multiply
    103,532.40x = 155,335.04 × 50,978.80
  4. Step 4: Simplify right side
    103,532.40x = 7,918,793,937.15
  5. Step 5: Solve for x
    x = 7,918,793,937.15/103,532.40
  6. Step 6: Final answer
    x = 76,486.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.